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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/ETERM/37
Eco-friendly disperse dyeing of ultraviolet-treated polyester fabric using disperse
Yellow 211

*1
Dr. Samreen Gul Khan , Dr.Shahid Adeel 1
1 Department of Chemistry, GC University, Faisalabad-38000, Pakistan.

Correspondence: samreengul@gcuf.edu.pk

Abstract

Dyes are widely used in the cosmetics, textile, leather, food, paper and plastic industries, but
in view of toxicity, these dyes show carcinogenicity towards the environment in the form of
effluents, due to which the dye bath needs modifications that not only reduce the effluent load
but also make the textile processing ecofriendly. A uniform and eco-friendly heating source,
ultraviolet radiation has auspiciously improved the disperse dyeing of polyester fabrics. For
our current study we used disperse yellow 211 (DY 211) to dye polyester fabric under the
influence of ultraviolet treatment. Both the fabric and dye solution were UV-treated for 15-60
min and dyed under variable conditions. We found that ultraviolet-treated polyester (RP) for
30 min. gives good color strength and darker shades at 70oC using 70 mL of un-irradiated dye
solution (NRS) of pH 8 in the presence of 2% of dispersant. While for the dye bath of pH 11,
irradiated polyester (RP) for 45 min. using 90 mL irradiated dye solution (RS) gives good color
strength and darker shades at 100°C in the presence of 1% of dispersant. ISO standards for
fastness revealed good-to-excellent ratings for different shades dyed under optimal conditions.
Ultraviolet treatment not only reduced the time, labor, and money, but also improved color
characteristics.
Keywords: disperse yellow 211; colorfastness properties; polyester fabric; Spectraflash
SF600; Ultraviolet irradiation

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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